622775431 has 4 divisors (see below), whose sum is σ = 628286832. Its totient is φ = 617264032.

The previous prime is 622775381. The next prime is 622775459. The reversal of 622775431 is 134577226.

It is a happy number.

622775431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622775431 - 2⁷ = 622775303 is a prime.

It is a super-2 number, since 2×622775431² = 775698474914471522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622775471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755531 + ... + 2755756.

It is an arithmetic number, because the mean of its divisors is an integer number (157071708).

Almost surely, 2^622775431 is an apocalyptic number.

622775431 is a deficient number, since it is larger than the sum of its proper divisors (5511401).

622775431 is a wasteful number, since it uses less digits than its factorization.

622775431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511400.

The product of its digits is 70560, while the sum is 37.

The square root of 622775431 is about 24955.4689597290. The cubic root of 622775431 is about 853.9723782491.

The spelling of 622775431 in words is "six hundred twenty-two million, seven hundred seventy-five thousand, four hundred thirty-one".